(57) An receiver apparatus according to an OFDM system includes a inter-symbol interference
suppressing unit configured to modify to a predetermined content a portion of a dominant
wave included in a received signal and to modify to a predetermined content a portion
of at least one delayed wave included in the received signal, a tentative demodulation
unit (201,202) configured to demodulate a signal inclusive of the modified dominant
wave and the modified delayed wave or inclusive of the unmodified dominant wave and
the modified delayed wave according to the OFDM system so as to output a tentatively
demodulated target symbol, and an inter-carrier interference suppressing unit (802,804,806,808),
wherein the inter-carrier interference suppressing unit includes a first unit (804)
configured to further modify the modified portion of the modified delayed wave in
response to the tentatively demodulated target symbol, a second unit (806) configured
to further modify the modified portion of the modified dominant wave and the modified
portion of the modified delayed wave in response to the tentatively demodulated target
symbol, and a selecting unit (802) configured to select one of the first unit and
the second unit in response to a delay profile.
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